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Руководство пользователя. Версия 2.0 Страница: 599

D-Link DWS-4026 Руководство пользователя. Версия 2.0 онлайн [599/741] 172936

ConfiguringAdvancedSettings

D-Link UnifiedWiredandWirelessAccessSystem

November2011 Page599

D‐LinkUWSUserManual

RTSThreshold SpecifyaRequesttoSend(RTS)Thresholdvaluebetween0and2347.

TheRTSthresholdindicatesthenumberofoctetsinanMPDU,belowwhichanRTS/

CTShandshakeisnotperformed.

ChangingtheRTSthresholdcanhelpcontroltrafficflowthroughtheAP,especially

onewithalotofclients.Ifyo

uspecifyalowthresholdvalue,RTSpacketswillbesent

morefrequently.Thiswillconsumemorebandwidthandreducethethroughputof

thepacket.Ontheotherhand,sendingmoreRTSpacketscanhelpthenetwork

recoverfrominterferenceorcollisionswhichmightoccuronabusynetwork,orona

netw

orkexperiencingelectromagneticinterference.

LoadBalancing Ifyouenableloadbalancing,youcancontroltheamountoftrafficthatisallowedon

theAP.

LoadUtilization Thisfieldallowsyoutosetathresholdforthepercentageofnetworkbandwidth

utilizationallowedontheradio.Oncethelevelyouspecif

yisreached,theAPstops

acceptingnewclientassociations.Enterapercentageofutilizationfrom1to100.

MaximumClients Specifythemaximumnumberofstationsallowedtoassociatewiththisaccesspoint

atanyonetime.

Youcanenteravaluebetween0and200.

RFScanOtherChannels Theaccesspoin

tcanperformRFscanstocollectinformationaboutotherwireless

deviceswithinrangeandthenreportthisinformationtotheDWS‐4000Seriesswitch.

IfyouselecttheScanOtherChannelsoption,theradioperiodicallymovesawayfrom

theoperationalchanneltoscanotherchannels.

Enablingthismodecausesthera

diotointerruptusertraffic,whichmaybenoticeable

withvoiceconnections.

WhentheScanOtherChannelsoptioniscleared,theAPscansonlytheoperating

channel.

RFScanSentry Selectthisoptiontoallowtheradiotooperateinsentrymode.

WhentheRFScanSentryoptionisselected,theradioprimari

lyperformsdedicated

RFscanning.Theradiopassivelylistensforbeaconsandtrafficexchangebetween

clientsandotheraccesspointsbutdoesnotacceptconnectionsfromwirelessclients.

Insentrymode,allVAPsaredisabled.NetworksthatdeploysentryAPsorradioscan

detectdevicesonthenetworkquickerandperf

ormmorethoroughsecurityanalysis.

Inthismode,theradioswitchesfromonechanneltothenext.Thelengthoftime

spentoneachchannel is controlledbythescanduration.Thedefaultscanduration

is10milliseconds.

RFScanInterval Thisfieldcontrolsthelengthoftimebetweenchannelchangesduringth

eRFScan.

RFScanSentry

Channels

Theradiocanscanchannelsintheradiofrequencyusedbythe802.11b/gband(2.4

GHz),the802.11aband(5GHz),orbothbands.Selectthechannelbandfortheradio

toscan.

Note:Thebandselectionappliesonlytoradiosinsentrymodean

disdependent

uponthecapabilitiesoftheradio.

RFScanDuration Thisfieldcontrolstheamountoftimetheradiospendsscanningtheotherchannel

(inmilliseconds)duringanRFscan.

Table353:RadioSettings(Cont.)

Field Description

D-Link DWS-4026 Руководство пользователя. Версия 2.0 онлайн [599/741] 172936

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